DevShed continues their look at web application security with part six of the series - a look at creating a registration form your site's visitors can use to create accounts/logins.

In this article we will be exploring the registration script of our site. This script is responsible for registering new users for the website. We will also be looking at database security; since the registration script also uses a database table, we will implement some of the concepts that we will be discussing.

Their example is relatively simple - it checks to ensure that none of the fields are empty, that one password matches the other and that the email address is in a valid format (using a regular expression). If it passes completely, its dropped into a MySQL database table that stores current user information.